Improved roofing-felt



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Letters' Patent No. 75,128, dated March 3, 1868.

IMPROVED ROOFING-FELT.

(the gtlgtlmlt numb in in time Etettzrs' patent mu milking and at the 5mm.

TO ALL TO WHOM THESE PRESENTS SHALL COME: I Be it known that I, FRANCIS CURTIS, of Newton, in the county of Middlesex, and State of Massachusetts, ha e invented a, new and useful fabrication or material to be'applied to the purposes for which the well-known Roofing-Felt is employed; and do hereby declare the following to be a. full, clear, and exact description thereof, reference being had to the specimens accompanying this specification. I

- The great consumption of and, constantly-increasing demand for the ordinary roofing-felt has created a scarcity of material, and a corresponding increase in -its-cos't of production. I have endenmred,, in rushing this invention, to produce a new compound material or fabrication, which not only may be mcnufzictured at comparetively small cos but is in many respects preferable to and altogether more durable than that nowmanufaetured.

The invention consists in a, combination of woollen or worsted rags with wood or wood fibre, the wood being subjected to a. proper chemical process in order to soften it and prepare it for being united or mixed with theground rags.

In putting my invention into practice, the rags are to be put into a paper-engine, and ground partially into pulp, in the ordinary manner of making paper; the wood, having been previously softened by chemical process, being then mixed or combined with the rage or partially-ground pulp, end the combined muss ground or reduced to pulp of the proper consistency. This pulp is then to be manipulated or treutedupon a machine, in the ordinary manner of manufacturing paper, which produces a firm, compact, durable texture, which, after being saturated with tar or other material, as at present practised, is to be applied to the roofs of building as a water-proof coveriug,' md, without the tar-saturation, to the sides of buildings beneath the clapbocids, the

material being, besides, capable of many other forms of application.

The wood, as a. component part of the fabrication, of course is obtained at very small cost, in comparison to materials heretofore employed in manufacturing roofing-felt.

I-clnim the new fabrication or compound m'atericl above described, consisting of the combination of woollen or worsted rags. with wood or wood fibre.

FRANCIS CURTIS Witnesses C. W. BALDWIN, M. Burner. 

